cc: Directly use property trees to calculate clip rect

cc/trees/property_tree.h

Index: cc/trees/property_tree.h
diff --git a/cc/trees/property_tree.h b/cc/trees/property_tree.h
index 9115702aa039f78a50c0cc9e0b8c63ba28d1a7cb..3bab20c3b652a3e687f8a641ce2c4e9c046b0d39 100644
--- a/cc/trees/property_tree.h
+++ b/cc/trees/property_tree.h
@@ -269,8 +269,11 @@ struct CC_EXPORT EffectNodeData {
   // rect.
   bool effect_changed;
   int num_copy_requests_in_subtree;
+  bool has_unclipped_descendants;
   int transform_id;
   int clip_id;
+  int target_id;
+  gfx::Rect clip_rect;
 
   bool operator==(const EffectNodeData& other) const;